/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

#include "itkMeshFileReader.h"
#include "itkMeshFileWriter.h"
#include "itkConformalFlatteningMeshFilter.h"
#include <stdlib.h>

int itkConformalFlatteningMeshFilterTest(int argc, char *argv[])
{
  if( argc < 4 )
    {
     std::cerr << "Usage: "<< argv[0] \
               << "vtkInputFilename vtkOutputFilename mapToSphere[0:1] [polarCellId]\n";

    return EXIT_FAILURE;
    }

  typedef itk::Mesh< double, 3 > MeshType;

  typedef itk::ConformalFlatteningMeshFilter<MeshType, MeshType>  FilterType;

  typedef itk::MeshFileReader<MeshType>  ReaderType;
  typedef itk::MeshFileWriter<MeshType>  WriterType;

  typedef MeshType::CellIdentifier  CellIdentifier;

  //
  // Read mesh file
  //

  std::cout << "Read " << argv[1] << std::endl;

  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName( argv[1] );

  try
    {
    reader->Update();
    }
  catch( itk::ExceptionObject & excp )
    {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
    }

  MeshType::Pointer mesh = reader->GetOutput();

  //
  // Test itkConformalFlatteningMeshFilter
  //

  FilterType::Pointer filter = FilterType::New();

  // Connect the input
  filter->SetInput( mesh );

  CellIdentifier  polarCellId = 0; // default set to the first cell

  if( argc > 4 )
    {
    polarCellId = atoi( argv[4] );
    }

  filter->SetPolarCellIdentifier( polarCellId );

  int mapToSphere = atoi( argv[3] );

  if( mapToSphere == 1 )
    {
    filter->MapToSphere();
    }
  else
    {
    filter->MapToPlane();
    }

  //  double scale = atof( argv[4] );
  //  filter->SetScale( scale );

  // Execute the filter

  std::cout << "Execute the filter" << std::endl;

  try
    {
    filter->Update();
    }
  catch( itk::ExceptionObject & excp )
    {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
    }

  // Get the Smart Pointer to the Filter Output
  MeshType::Pointer newMesh = filter->GetOutput();

  //
  // Write to file
  //

  std::cout << "Write " << argv[2] << std::endl;

  WriterType::Pointer writer = WriterType::New();
  writer->SetInput( newMesh );
  writer->SetFileName( argv[2] );

  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & excp )
    {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}
